1/* 2 * H.264 encoding using the x264 library 3 * Copyright (C) 2005 Mans Rullgard <mans@mansr.com> 4 * 5 * This file is part of Libav. 6 * 7 * Libav is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * Libav is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with Libav; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "libavutil/opt.h" 23#include "libavutil/pixdesc.h" 24#include "avcodec.h" 25#include "internal.h" 26#include <x264.h> 27#include <float.h> 28#include <math.h> 29#include <stdio.h> 30#include <stdlib.h> 31#include <string.h> 32 33typedef struct X264Context { 34 AVClass *class; 35 x264_param_t params; 36 x264_t *enc; 37 x264_picture_t pic; 38 uint8_t *sei; 39 int sei_size; 40 AVFrame out_pic; 41 char *preset; 42 char *tune; 43 char *profile; 44 int fastfirstpass; 45 float crf; 46 float crf_max; 47 int cqp; 48 int aq_mode; 49 float aq_strength; 50 char *psy_rd; 51 int psy; 52 int rc_lookahead; 53 int weightp; 54 int weightb; 55 int ssim; 56 int intra_refresh; 57 int b_bias; 58 int b_pyramid; 59 int mixed_refs; 60 int dct8x8; 61 int fast_pskip; 62 int aud; 63 int mbtree; 64 char *deblock; 65 float cplxblur; 66 char *partitions; 67 int direct_pred; 68 int slice_max_size; 69 char *stats; 70} X264Context; 71 72static void X264_log(void *p, int level, const char *fmt, va_list args) 73{ 74 static const int level_map[] = { 75 [X264_LOG_ERROR] = AV_LOG_ERROR, 76 [X264_LOG_WARNING] = AV_LOG_WARNING, 77 [X264_LOG_INFO] = AV_LOG_INFO, 78 [X264_LOG_DEBUG] = AV_LOG_DEBUG 79 }; 80 81 if (level < 0 || level > X264_LOG_DEBUG) 82 return; 83 84 av_vlog(p, level_map[level], fmt, args); 85} 86 87 88static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size, 89 x264_nal_t *nals, int nnal, int skip_sei) 90{ 91 X264Context *x4 = ctx->priv_data; 92 uint8_t *p = buf; 93 int i; 94 95 /* Write the SEI as part of the first frame. */ 96 if (x4->sei_size > 0 && nnal > 0) { 97 memcpy(p, x4->sei, x4->sei_size); 98 p += x4->sei_size; 99 x4->sei_size = 0; 100 } 101 102 for (i = 0; i < nnal; i++){ 103 /* Don't put the SEI in extradata. */ 104 if (skip_sei && nals[i].i_type == NAL_SEI) { 105 x4->sei_size = nals[i].i_payload; 106 x4->sei = av_malloc(x4->sei_size); 107 memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload); 108 continue; 109 } 110 memcpy(p, nals[i].p_payload, nals[i].i_payload); 111 p += nals[i].i_payload; 112 } 113 114 return p - buf; 115} 116 117static int X264_frame(AVCodecContext *ctx, uint8_t *buf, 118 int bufsize, void *data) 119{ 120 X264Context *x4 = ctx->priv_data; 121 AVFrame *frame = data; 122 x264_nal_t *nal; 123 int nnal, i; 124 x264_picture_t pic_out; 125 126 x264_picture_init( &x4->pic ); 127 x4->pic.img.i_csp = x4->params.i_csp; 128 if (x264_bit_depth > 8) 129 x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH; 130 x4->pic.img.i_plane = 3; 131 132 if (frame) { 133 for (i = 0; i < 3; i++) { 134 x4->pic.img.plane[i] = frame->data[i]; 135 x4->pic.img.i_stride[i] = frame->linesize[i]; 136 } 137 138 x4->pic.i_pts = frame->pts; 139 x4->pic.i_type = 140 frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME : 141 frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P : 142 frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B : 143 X264_TYPE_AUTO; 144 if (x4->params.b_tff != frame->top_field_first) { 145 x4->params.b_tff = frame->top_field_first; 146 x264_encoder_reconfig(x4->enc, &x4->params); 147 } 148 } 149 150 do { 151 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0) 152 return -1; 153 154 bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0); 155 if (bufsize < 0) 156 return -1; 157 } while (!bufsize && !frame && x264_encoder_delayed_frames(x4->enc)); 158 159 /* FIXME: libx264 now provides DTS, but AVFrame doesn't have a field for it. */ 160 x4->out_pic.pts = pic_out.i_pts; 161 162 switch (pic_out.i_type) { 163 case X264_TYPE_IDR: 164 case X264_TYPE_I: 165 x4->out_pic.pict_type = AV_PICTURE_TYPE_I; 166 break; 167 case X264_TYPE_P: 168 x4->out_pic.pict_type = AV_PICTURE_TYPE_P; 169 break; 170 case X264_TYPE_B: 171 case X264_TYPE_BREF: 172 x4->out_pic.pict_type = AV_PICTURE_TYPE_B; 173 break; 174 } 175 176 x4->out_pic.key_frame = pic_out.b_keyframe; 177 if (bufsize) 178 x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; 179 180 return bufsize; 181} 182 183static av_cold int X264_close(AVCodecContext *avctx) 184{ 185 X264Context *x4 = avctx->priv_data; 186 187 av_freep(&avctx->extradata); 188 av_free(x4->sei); 189 190 if (x4->enc) 191 x264_encoder_close(x4->enc); 192 193 return 0; 194} 195 196static int convert_pix_fmt(enum PixelFormat pix_fmt) 197{ 198 switch (pix_fmt) { 199 case PIX_FMT_YUV420P: 200 case PIX_FMT_YUVJ420P: 201 case PIX_FMT_YUV420P9: 202 case PIX_FMT_YUV420P10: return X264_CSP_I420; 203 case PIX_FMT_YUV422P: 204 case PIX_FMT_YUV422P10: return X264_CSP_I422; 205 case PIX_FMT_YUV444P: 206 case PIX_FMT_YUV444P9: 207 case PIX_FMT_YUV444P10: return X264_CSP_I444; 208 }; 209 return 0; 210} 211 212#define PARSE_X264_OPT(name, var)\ 213 if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\ 214 av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\ 215 return AVERROR(EINVAL);\ 216 } 217 218static av_cold int X264_init(AVCodecContext *avctx) 219{ 220 X264Context *x4 = avctx->priv_data; 221 222 x264_param_default(&x4->params); 223 224 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; 225 226 if (x4->preset || x4->tune) 227 if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) { 228 av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune); 229 return AVERROR(EINVAL); 230 } 231 232 if (avctx->level > 0) 233 x4->params.i_level_idc = avctx->level; 234 235 x4->params.pf_log = X264_log; 236 x4->params.p_log_private = avctx; 237 x4->params.i_log_level = X264_LOG_DEBUG; 238 x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt); 239 240 if (avctx->bit_rate) { 241 x4->params.rc.i_bitrate = avctx->bit_rate / 1000; 242 x4->params.rc.i_rc_method = X264_RC_ABR; 243 } 244 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; 245 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; 246 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1; 247 if (avctx->flags & CODEC_FLAG_PASS2) { 248 x4->params.rc.b_stat_read = 1; 249 } else { 250#if FF_API_X264_GLOBAL_OPTS 251 if (avctx->crf) { 252 x4->params.rc.i_rc_method = X264_RC_CRF; 253 x4->params.rc.f_rf_constant = avctx->crf; 254 x4->params.rc.f_rf_constant_max = avctx->crf_max; 255 } else if (avctx->cqp > -1) { 256 x4->params.rc.i_rc_method = X264_RC_CQP; 257 x4->params.rc.i_qp_constant = avctx->cqp; 258 } 259#endif 260 261 if (x4->crf >= 0) { 262 x4->params.rc.i_rc_method = X264_RC_CRF; 263 x4->params.rc.f_rf_constant = x4->crf; 264 } else if (x4->cqp >= 0) { 265 x4->params.rc.i_rc_method = X264_RC_CQP; 266 x4->params.rc.i_qp_constant = x4->cqp; 267 } 268 269 if (x4->crf_max >= 0) 270 x4->params.rc.f_rf_constant_max = x4->crf_max; 271 } 272 273 if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy && 274 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { 275 x4->params.rc.f_vbv_buffer_init = 276 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; 277 } 278 279 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); 280 x4->params.rc.f_pb_factor = avctx->b_quant_factor; 281 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset; 282 283#if FF_API_X264_GLOBAL_OPTS 284 if (avctx->aq_mode >= 0) 285 x4->params.rc.i_aq_mode = avctx->aq_mode; 286 if (avctx->aq_strength >= 0) 287 x4->params.rc.f_aq_strength = avctx->aq_strength; 288 if (avctx->psy_rd >= 0) 289 x4->params.analyse.f_psy_rd = avctx->psy_rd; 290 if (avctx->psy_trellis >= 0) 291 x4->params.analyse.f_psy_trellis = avctx->psy_trellis; 292 if (avctx->rc_lookahead >= 0) 293 x4->params.rc.i_lookahead = avctx->rc_lookahead; 294 if (avctx->weighted_p_pred >= 0) 295 x4->params.analyse.i_weighted_pred = avctx->weighted_p_pred; 296 if (avctx->bframebias) 297 x4->params.i_bframe_bias = avctx->bframebias; 298 if (avctx->deblockalpha) 299 x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha; 300 if (avctx->deblockbeta) 301 x4->params.i_deblocking_filter_beta = avctx->deblockbeta; 302 if (avctx->complexityblur >= 0) 303 x4->params.rc.f_complexity_blur = avctx->complexityblur; 304 if (avctx->directpred >= 0) 305 x4->params.analyse.i_direct_mv_pred = avctx->directpred; 306 if (avctx->partitions) { 307 if (avctx->partitions & X264_PART_I4X4) 308 x4->params.analyse.inter |= X264_ANALYSE_I4x4; 309 if (avctx->partitions & X264_PART_I8X8) 310 x4->params.analyse.inter |= X264_ANALYSE_I8x8; 311 if (avctx->partitions & X264_PART_P8X8) 312 x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16; 313 if (avctx->partitions & X264_PART_P4X4) 314 x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8; 315 if (avctx->partitions & X264_PART_B8X8) 316 x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16; 317 } 318 x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM; 319 x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH; 320 x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE; 321 x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED; 322 x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS; 323 x4->params.analyse.b_transform_8x8 = avctx->flags2 & CODEC_FLAG2_8X8DCT; 324 x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP; 325 x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD; 326 x4->params.analyse.b_psy = avctx->flags2 & CODEC_FLAG2_PSY; 327 x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE); 328#endif 329 330 if (avctx->me_method == ME_EPZS) 331 x4->params.analyse.i_me_method = X264_ME_DIA; 332 else if (avctx->me_method == ME_HEX) 333 x4->params.analyse.i_me_method = X264_ME_HEX; 334 else if (avctx->me_method == ME_UMH) 335 x4->params.analyse.i_me_method = X264_ME_UMH; 336 else if (avctx->me_method == ME_FULL) 337 x4->params.analyse.i_me_method = X264_ME_ESA; 338 else if (avctx->me_method == ME_TESA) 339 x4->params.analyse.i_me_method = X264_ME_TESA; 340 341 if (avctx->gop_size >= 0) 342 x4->params.i_keyint_max = avctx->gop_size; 343 if (avctx->max_b_frames >= 0) 344 x4->params.i_bframe = avctx->max_b_frames; 345 if (avctx->scenechange_threshold >= 0) 346 x4->params.i_scenecut_threshold = avctx->scenechange_threshold; 347 if (avctx->qmin >= 0) 348 x4->params.rc.i_qp_min = avctx->qmin; 349 if (avctx->qmax >= 0) 350 x4->params.rc.i_qp_max = avctx->qmax; 351 if (avctx->max_qdiff >= 0) 352 x4->params.rc.i_qp_step = avctx->max_qdiff; 353 if (avctx->qblur >= 0) 354 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ 355 if (avctx->qcompress >= 0) 356 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ 357 if (avctx->refs >= 0) 358 x4->params.i_frame_reference = avctx->refs; 359 if (avctx->trellis >= 0) 360 x4->params.analyse.i_trellis = avctx->trellis; 361 if (avctx->me_range >= 0) 362 x4->params.analyse.i_me_range = avctx->me_range; 363 if (avctx->noise_reduction >= 0) 364 x4->params.analyse.i_noise_reduction = avctx->noise_reduction; 365 if (avctx->me_subpel_quality >= 0) 366 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; 367 if (avctx->b_frame_strategy >= 0) 368 x4->params.i_bframe_adaptive = avctx->b_frame_strategy; 369 if (avctx->keyint_min >= 0) 370 x4->params.i_keyint_min = avctx->keyint_min; 371 if (avctx->coder_type >= 0) 372 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC; 373 if (avctx->me_cmp >= 0) 374 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; 375 376 if (x4->aq_mode >= 0) 377 x4->params.rc.i_aq_mode = x4->aq_mode; 378 if (x4->aq_strength >= 0) 379 x4->params.rc.f_aq_strength = x4->aq_strength; 380 PARSE_X264_OPT("psy-rd", psy_rd); 381 PARSE_X264_OPT("deblock", deblock); 382 PARSE_X264_OPT("partitions", partitions); 383 PARSE_X264_OPT("stats", stats); 384 if (x4->psy >= 0) 385 x4->params.analyse.b_psy = x4->psy; 386 if (x4->rc_lookahead >= 0) 387 x4->params.rc.i_lookahead = x4->rc_lookahead; 388 if (x4->weightp >= 0) 389 x4->params.analyse.i_weighted_pred = x4->weightp; 390 if (x4->weightb >= 0) 391 x4->params.analyse.b_weighted_bipred = x4->weightb; 392 if (x4->cplxblur >= 0) 393 x4->params.rc.f_complexity_blur = x4->cplxblur; 394 395 if (x4->ssim >= 0) 396 x4->params.analyse.b_ssim = x4->ssim; 397 if (x4->intra_refresh >= 0) 398 x4->params.b_intra_refresh = x4->intra_refresh; 399 if (x4->b_bias != INT_MIN) 400 x4->params.i_bframe_bias = x4->b_bias; 401 if (x4->b_pyramid >= 0) 402 x4->params.i_bframe_pyramid = x4->b_pyramid; 403 if (x4->mixed_refs >= 0) 404 x4->params.analyse.b_mixed_references = x4->mixed_refs; 405 if (x4->dct8x8 >= 0) 406 x4->params.analyse.b_transform_8x8 = x4->dct8x8; 407 if (x4->fast_pskip >= 0) 408 x4->params.analyse.b_fast_pskip = x4->fast_pskip; 409 if (x4->aud >= 0) 410 x4->params.b_aud = x4->aud; 411 if (x4->mbtree >= 0) 412 x4->params.rc.b_mb_tree = x4->mbtree; 413 if (x4->direct_pred >= 0) 414 x4->params.analyse.i_direct_mv_pred = x4->direct_pred; 415 416 if (x4->slice_max_size >= 0) 417 x4->params.i_slice_max_size = x4->slice_max_size; 418 419 if (x4->fastfirstpass) 420 x264_param_apply_fastfirstpass(&x4->params); 421 422 if (x4->profile) 423 if (x264_param_apply_profile(&x4->params, x4->profile) < 0) { 424 av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile); 425 return AVERROR(EINVAL); 426 } 427 428 x4->params.i_width = avctx->width; 429 x4->params.i_height = avctx->height; 430 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; 431 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; 432 x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den; 433 x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num; 434 435 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; 436 437 x4->params.i_threads = avctx->thread_count; 438 439 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; 440 441 x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP); 442 443 x4->params.i_slice_count = avctx->slices; 444 445 x4->params.vui.b_fullrange = avctx->pix_fmt == PIX_FMT_YUVJ420P; 446 447 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) 448 x4->params.b_repeat_headers = 0; 449 450 // update AVCodecContext with x264 parameters 451 avctx->has_b_frames = x4->params.i_bframe ? 452 x4->params.i_bframe_pyramid ? 2 : 1 : 0; 453 if (avctx->max_b_frames < 0) 454 avctx->max_b_frames = 0; 455 456 avctx->bit_rate = x4->params.rc.i_bitrate*1000; 457#if FF_API_X264_GLOBAL_OPTS 458 avctx->crf = x4->params.rc.f_rf_constant; 459#endif 460 461 x4->enc = x264_encoder_open(&x4->params); 462 if (!x4->enc) 463 return -1; 464 465 avctx->coded_frame = &x4->out_pic; 466 467 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { 468 x264_nal_t *nal; 469 int nnal, s, i; 470 471 s = x264_encoder_headers(x4->enc, &nal, &nnal); 472 473 for (i = 0; i < nnal; i++) 474 if (nal[i].i_type == NAL_SEI) 475 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25); 476 477 avctx->extradata = av_malloc(s); 478 avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1); 479 } 480 481 return 0; 482} 483 484static const enum PixelFormat pix_fmts_8bit[] = { 485 PIX_FMT_YUV420P, 486 PIX_FMT_YUVJ420P, 487 PIX_FMT_YUV422P, 488 PIX_FMT_YUV444P, 489 PIX_FMT_NONE 490}; 491static const enum PixelFormat pix_fmts_9bit[] = { 492 PIX_FMT_YUV420P9, 493 PIX_FMT_YUV444P9, 494 PIX_FMT_NONE 495}; 496static const enum PixelFormat pix_fmts_10bit[] = { 497 PIX_FMT_YUV420P10, 498 PIX_FMT_YUV422P10, 499 PIX_FMT_YUV444P10, 500 PIX_FMT_NONE 501}; 502 503static av_cold void X264_init_static(AVCodec *codec) 504{ 505 if (x264_bit_depth == 8) 506 codec->pix_fmts = pix_fmts_8bit; 507 else if (x264_bit_depth == 9) 508 codec->pix_fmts = pix_fmts_9bit; 509 else if (x264_bit_depth == 10) 510 codec->pix_fmts = pix_fmts_10bit; 511} 512 513#define OFFSET(x) offsetof(X264Context, x) 514#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 515static const AVOption options[] = { 516 { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE}, 517 { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, 518 { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, 519 { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { 1 }, 0, 1, VE}, 520 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE }, 521 { "crf_max", "In CRF mode, prevents VBV from lowering quality beyond this point.",OFFSET(crf_max), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE }, 522 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE }, 523 { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "aq_mode"}, 524 { "none", NULL, 0, AV_OPT_TYPE_CONST, {X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" }, 525 { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" }, 526 { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" }, 527 { "aq-strength", "AQ strength. Reduces blocking and blurring in flat and textured areas.", OFFSET(aq_strength), AV_OPT_TYPE_FLOAT, {-1}, -1, FLT_MAX, VE}, 528 { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE }, 529 { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE}, 530 { "rc-lookahead", "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE }, 531 { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE }, 532 { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "weightp" }, 533 { "none", NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" }, 534 { "simple", NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" }, 535 { "smart", NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" }, 536 { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE }, 537 { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, {-1 }, -1, 1, VE }, 538 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE }, 539 { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "b_pyramid" }, 540 { "none", NULL, 0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" }, 541 { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" }, 542 { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" }, 543 { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {-1}, -1, 1, VE }, 544 { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE}, 545 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE}, 546 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE}, 547 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE}, 548 { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, 549 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE}, 550 { "partitions", "A comma-separated list of partitions to consider. " 551 "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE}, 552 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "direct-pred" }, 553 { "none", NULL, 0, AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, 554 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, 555 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, 556 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, 557 { "slice-max-size","Limit the size of each slice in bytes", OFFSET(slice_max_size),AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE }, 558 { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, 559 { NULL }, 560}; 561 562static const AVClass class = { 563 .class_name = "libx264", 564 .item_name = av_default_item_name, 565 .option = options, 566 .version = LIBAVUTIL_VERSION_INT, 567}; 568 569static const AVCodecDefault x264_defaults[] = { 570 { "b", "0" }, 571 { "bf", "-1" }, 572 { "g", "-1" }, 573 { "qmin", "-1" }, 574 { "qmax", "-1" }, 575 { "qdiff", "-1" }, 576 { "qblur", "-1" }, 577 { "qcomp", "-1" }, 578 { "refs", "-1" }, 579 { "sc_threshold", "-1" }, 580 { "trellis", "-1" }, 581 { "nr", "-1" }, 582 { "me_range", "-1" }, 583 { "me_method", "-1" }, 584 { "subq", "-1" }, 585 { "b_strategy", "-1" }, 586 { "keyint_min", "-1" }, 587 { "coder", "-1" }, 588 { "cmp", "-1" }, 589 { "threads", AV_STRINGIFY(X264_THREADS_AUTO) }, 590 { NULL }, 591}; 592 593AVCodec ff_libx264_encoder = { 594 .name = "libx264", 595 .type = AVMEDIA_TYPE_VIDEO, 596 .id = CODEC_ID_H264, 597 .priv_data_size = sizeof(X264Context), 598 .init = X264_init, 599 .encode = X264_frame, 600 .close = X264_close, 601 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, 602 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), 603 .priv_class = &class, 604 .defaults = x264_defaults, 605 .init_static_data = X264_init_static, 606}; 607